﻿#region Copyright(c) 2006 ZO, All right reserved.
// -----------------------------------------------------------------------------
// Copyright(c) 2006 ZO, All right reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
//   1.  Redistribution of source code must retain the above copyright notice,
//       this list of conditions and the following disclaimer.
//   2.  Redistribution in binary form must reproduce the above copyright
//       notice, this list of conditions and the following disclaimer in the
//       documentation and/or other materials provided with the distribution.
//   3.  The name of the author may not be used to endorse or promote products
//       derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
// WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
// EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// -----------------------------------------------------------------------------
#endregion


#region Using directives

using System;
using System.IO;
using ZO.SmartCore.Collections.Generic;
using ZO.SmartCore.IO;
using ZO.SmartCore.Xml;
using ArgumentNullException= ZO.SmartCore.Core.ArgumentNullException;

#endregion

namespace ZO.SmartCore.Configuration
{
    /// <summary>
    ///  read and write the <see cref="T:SmartCore.IO.StringStream"/> to the provided location on disk.
    /// </summary>
    public class FileConfigurationProvider : IConfigurationProvider
    {

        #region Constructors

        #endregion

        #region Destructor

        #endregion

        #region Fields

        #endregion

        #region Events

        #endregion

        #region Operators

        #endregion

        #region Properties

        #endregion

        #region Methods

        #endregion

        #region IConfigurationProvider Members

        /// <summary>
        /// Gets the XML document from provider.
        /// </summary>
        /// <param name="file">The file.</param>
        /// <returns></returns>
        public virtual Document GetXmlDocument(string file)
        {
            StringStream data = this.Load(file);

            if (data != null && data.Length > 0)
            {
                Document xmlDoc = new Document();

                xmlDoc.LoadXml(data.ToString());

                return xmlDoc;
            }
            return null;
        }

        /// <summary>
        /// Saves the XML document in provider space.
        /// </summary>
        /// <param name="file">The file.</param>
        /// <param name="xmlDoc">The XML doc.</param>
        public virtual void SaveXmlDocument(string file, Document xmlDoc)
        {
            if (xmlDoc != null)
            {
                StringStream data = new StringStream(xmlDoc.ToString());

                if (data.Length > 0)
                {
                    this.Save(file, data);
                }

            }
        }

        /// <summary>
        /// Gets all the files names in specified folder.
        /// </summary>
        /// <param name="directoryName">Name of the directory.</param>
        /// <returns>All files name in specified folder</returns>
        public virtual string[] GetFilesNames(string directoryName)
        {
            List<string> list = new List<string>();

            if (String.IsNullOrEmpty(directoryName))
            {
                return list.ToArray();
            } // if

            directoryName = Path.GetFullPath(directoryName);

            if (Directory.Exists(directoryName))
            {

                foreach (string file in Directory.GetFiles(directoryName, "*", SearchOption.TopDirectoryOnly))
                {
                    list.Add(file);
                }
            }


            return list.ToArray();
        }


        /// <summary>
        /// Gets all the files names in specified folder.
        /// </summary>
        /// <param name="directoryName">Name of the directory.</param>
        /// <param name="searchPattern">The search string to match against the names of files in path.</param>
        /// <returns>All files name in specified folder</returns>
        public virtual string[] GetFilesNames(string directoryName, string searchPattern)
        {
            List<string> list = new List<string>();

            if (String.IsNullOrEmpty(directoryName))
            {
                return list.ToArray();
            } // if

            directoryName = Path.GetFullPath(directoryName);

            if (Directory.Exists(directoryName))
            {

                foreach (string file in Directory.GetFiles(directoryName, searchPattern, SearchOption.TopDirectoryOnly))
                {
                    list.Add(file);
                }
            }


            return list.ToArray();
        }


        /// <summary>
        /// Get Whether specified file exists
        /// </summary>
        /// <param name="fileName">Name of the file.</param>
        /// <returns>true if file exists else false</returns>
        public virtual bool FileExists(string fileName)
        {
            if (String.IsNullOrEmpty(fileName))
            {
                return false;
            } // if

            fileName = Path.GetFullPath(fileName);
            return File.Exists(fileName);
        }

        /// <summary>
        /// Get Whether specified directory exists
        /// </summary>
        /// <param name="directoryName">Name of the directory.</param>
        /// <returns>true if directory exists else false</returns>
        public virtual bool DirectoryExists(string directoryName)
        {
            if (String.IsNullOrEmpty(directoryName))
            {
                return false;
            } // if

            directoryName = Path.GetFullPath(directoryName);
            return Directory.Exists(directoryName);
        }


        /// <summary>
        /// Get The Name of Storage used by the Provider
        /// </summary>
        /// <value>storage name.</value>
        public virtual string Name
        {
            get
            {
                return "File";
            }
        }

        /// <summary>
        /// load the file to MemoryStream
        /// </summary>
        /// <param name="file">The file.</param>
        /// <returns>MemoryStream containing the loaded file</returns>
        public virtual StringStream Load(string file)
        {
            return Utility.ReadFileIntoStream(file);
        }

        /// <summary>
        /// Saves the specified configuration.
        /// </summary>
        /// <param name="file">The file name to save.</param>
        /// <param name="contents">The contents.</param>
        public virtual void Save(string file, StringStream contents)
        {
            Utility.WriteFileFromStream(file, contents);
        }

        /// <summary>
        /// Creates the directory.
        /// </summary>
        /// <param name="directory">The path of the directory to create.</param>
        public virtual void CreateDirectory(string directory)
        {
            if (String.IsNullOrEmpty(directory))
            {
                throw new ArgumentNullException("directory");
            } // if

            directory = Path.GetFullPath(directory);
            if (!Directory.Exists(directory))
            {
                Directory.CreateDirectory(directory);
                //throw new IOException(String.Format(System.Globalization.CultureInfo.InvariantCulture, Resources.IO_DirectoryExists_Path, new string[] { directory }));

            } // if
        }



        /// <summary>
        /// Deletes the directory.
        /// </summary>
        /// <param name="directory">The directory.</param>
        public virtual void DeleteDirectory(string directory)
        {
            if (String.IsNullOrEmpty(directory))
            {
                throw new ArgumentNullException("directory");
            } // if

            directory = Path.GetFullPath(directory);
            if (Directory.Exists(directory))
            {
                Directory.Delete(directory, true);
            } // if

        } // CreateDirectory


        /// <summary>
        /// Deletes the File.
        /// </summary>
        /// <param name="fileName">Name of the file.</param>
        public virtual void DeleteFile(string fileName)
        {
            if (String.IsNullOrEmpty(fileName))
            {
                throw new ArgumentNullException("fileName");
            } // if

            string filePath = Path.GetFullPath(fileName);
            if (File.Exists(filePath))
            {
                File.Delete(filePath);
            } // if
        }

        #endregion


    }
}
